LTC1694CS5#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC1694CS5#TRPBF is a dual SMBus active pull-up device manufactured by Analog Devices Inc. It operates within a supply voltage range of 2.7V to 6V and draws a typical supply current of 60µA. The component provides a boosted pull-up current of 2.2mA during positive transitions and a standard pull-up current of 275µA during negative transitions or steady DC levels. It supports a maximum operating frequency of 100kHz and functions within an ambient temperature range of 0°C to 70°C. The device is housed in a 5-lead plastic TSOT-23 package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Utilizes bilevel hysteretic current sources to enhance data transmission speed and reliability under specified loading conditions.
• Features auto-detect standby mode that reduces supply current when both SCL and SDA lines remain high.
• Improves low state noise margins by decreasing pull-up current during negative transitions or steady DC levels.

Signal Buffers, Repeaters, Splitters Applications

• Notebook and Palmtop Computers
• Portable Instruments
• Battery Chargers
• Industrial Control Applications
• TV/Video Products

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix CS5 corresponds to the commercial temperature grade (0°C to 70°C) rather than the industrial grade IS5 (-40°C to 85°C). Confirm the TRPBF designation indicates tape and reel packaging with lead-free composition. Cross-reference the manufacturer part number with official Analog Devices documentation to ensure compatibility with system requirements before procurement.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for applications requiring improved SMBus rise times without compromising noise margins. Ensure the bus capacitance and series resistance values comply with the calculated limits for fall time and low state noise margin. Verify that the 2.7V to 6V supply voltage range aligns with the system power architecture and that the TSOT-23 package fits the available PCB space.

Signal Buffers, Repeaters, Splitters Part Context

The LTC1694 belongs to the SMBus/I2C accelerator family designed to overcome limitations of resistive pull-ups. It serves as a direct replacement for fixed current sources or resistors in high-capacitance bus environments. The device maintains compatibility with Philips I2C Bus standards while offering enhanced performance for multiple device connections or longer interconnects.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC1694IS5#TRPBF: Industrial temperature grade variant (-40°C to 85°C).